US6536606B2 - Sludge collector with entrapment plate - Google Patents
Sludge collector with entrapment plate Download PDFInfo
- Publication number
- US6536606B2 US6536606B2 US09/912,268 US91226801A US6536606B2 US 6536606 B2 US6536606 B2 US 6536606B2 US 91226801 A US91226801 A US 91226801A US 6536606 B2 US6536606 B2 US 6536606B2
- Authority
- US
- United States
- Prior art keywords
- tank
- withdrawal
- sludge
- withdrawal manifold
- manifold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 86
- 239000012530 fluid Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 description 12
- 230000000712 assembly Effects 0.000 description 7
- 238000000429 assembly Methods 0.000 description 7
- 230000004888 barrier function Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
- B01D21/04—Settling tanks with single outlets for the separated liquid with moving scrapers
- B01D21/06—Settling tanks with single outlets for the separated liquid with moving scrapers with rotating scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/18—Construction of the scrapers or the driving mechanisms for settling tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/2405—Feed mechanisms for settling tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/2427—The feed or discharge opening located at a distant position from the side walls
Definitions
- the invention relates to circular clarifiers, and more particularly, to sludge collectors used in circular clarifiers.
- Circular clarifiers typically include a tank, a center pier, and a sludge collector.
- the tank is cylindrically shaped and is capable of containing a solution.
- the center pier projects from the bottom of the tank along a central axis and includes inlet ports.
- a solution containing suspended solids is supplied to the center of the tank from the inlet ports such that the solution gradually moves radially outwardly toward the wall of the tank. As the solution flows outwardly, solids settle from the solution onto the tank floor thereby separating the solids from the solution.
- the clarified liquid is removed from the tank through outlet ports located along the tank wall near the surface of the solution.
- Sludge collectors retrieve the sludge that settles from the solution onto the bottom of the tank.
- Sludge collectors typically include a withdrawal manifold and a scraper assembly.
- the withdrawal manifold is centrally mounted for rotation about the center pier.
- the scraper assembly is generally spiral-shaped such that rotation of the scraper assembly moves the settled sludge toward the center of the tank and into the withdrawal manifold where it is removed by a sludge withdrawal line.
- the present invention is directed to an entrapment plate that provides a physical barrier for trapping transported sludge between the withdrawal manifold and the scraper assembly and funneling the trapped sludge into the withdrawal manifold of the sludge collector.
- the entrapment plate of the present invention minimizes the carryover of concentrated sludge over the scraper assembly by providing a physical barrier that holds the sludge below the height of the scraper assembly instead of solely relying on small differences in the specific gravities of different sludge concentrations to hold the sludge in front of the scraper assembly.
- the entrapment plate also allows the size of the withdrawal ports to be increased, thereby decreasing the exit velocity through the withdrawal ports and minimizing the infusion of lesser concentrated sludge into the rotating withdrawal manifold.
- the present invention is directed to a sludge collector for use with a circular clarifier.
- the circular clarifier includes a tank that has a bottom and a wall that extends upwardly from the bottom of the tank.
- the tank is configured to contain a solution and allow sludge to settle from the solution to the bottom of the tank.
- the sludge collector includes a withdrawal manifold, a scraper assembly, and an entrapment plate.
- the withdrawal manifold is located at the bottom of the tank.
- the scraper assembly extends from the withdrawal manifold toward the wall of the tank and moves the settled sludge toward the withdrawal manifold.
- the entrapment plate extends between the withdrawal manifold and the scraper assembly to trap sludge between the withdrawal manifold and the scraper assembly and funnels the trapped sludge into the withdrawal manifold.
- FIG. 1 is a cross-section elevation view of a circular clarifier of the present invention.
- FIG. 2 is a top view illustrating the circular clarifier shown in FIG. 1 .
- FIG. 3 is an enlarged perspective view of the sludge collector shown in FIG. 1 .
- FIG. 4 is a top view illustrating the sludge collector shown in FIG. 3 .
- FIG. 5 is a cross-section view taken along line 5 — 5 in FIG. 4 .
- FIG. 6 is a cross-section view taken along line 6 — 6 in FIG. 4 .
- FIGS. 1 and 2 illustrate a circular clarifier 10 that is used to remove solids from a solution.
- the circular clarifier 10 includes a tank 12 , a center pier 14 , an access bridge 16 , and a sludge collector 18 .
- the tank 12 is cylindrically shaped and is capable of containing the solution having suspended solids.
- the tank 12 includes a bottom 20 and a wall 22 that extends upwardly from the bottom 20 .
- the center pier 14 projects from the bottom 20 of the tank 12 along a central axis 24 and includes inlet ports 26 .
- the bridge 16 is connected to a wall 22 of the tank 12 and to the center pier 14 such that the access bridge 16 extends radially from the center of the tank 12 to the wall 22 of the tank 12 .
- a solution containing suspended solids is supplied to the center of the tank 12 from an influent line 28 through the inlet ports 26 of the center pier 14 .
- the solution is directed radially outwardly from the inlet ports 26 toward the wall 22 of the tank 12 .
- the solution moves through a diffuser 30 to reduce the flow energy of the solution such that the solution gradually moves radially outwardly toward the wall 22 of the tank 12 .
- As the solution slowly flows outward suspended solids settle from the solution onto the bottom 20 of the tank 12 thereby separating the solids from the solution.
- the clarified liquid is removed from the tank 12 through outlet ports 32 located at the tank wall 22 .
- the sludge collector 18 retrieves the sludge that settles from the solution onto the bottom 20 of the tank 12 .
- the sludge collector 18 includes a withdrawal manifold 34 and a scraper assembly 36 .
- the withdrawal manifold 34 is a hollow covered cylindrical shell that is centrally mounted around the center pier 14 for rotation about the center pier 14 .
- the withdrawal manifold 34 includes a rectangular top portion 38 and a cylindrical wall 40 that extends downwardly from the top portion 38 .
- the top portion 38 includes two opposing sides 42 and two adjacent sides 44 that are adjacent to the opposing sides 42 .
- the withdrawal manifold 34 includes a floor seal 46 that is mounted to the bottom of the wall 40 to provide a seal between the wall 40 of the withdrawal manifold 34 and the bottom 20 of the tank 12 .
- the withdrawal manifold 34 defines an interior cavity 48 and includes withdrawal ports 50 that are located on the wall 40 of the withdrawal manifold 34 .
- a seal 52 closes a gap between the top portion 38 of the withdrawal manifold 34 and the center pier 14 to prevent fluid flow between the tank 12 and the interior cavity 48 through the gap.
- the withdrawal ports 50 are in fluid communication with the tank 12 and the interior cavity 48 of the withdrawal manifold 34 .
- a sludge withdrawal line 54 is in fluid communication with the interior cavity 48 of the withdrawal manifold 34 and is used to remove the sludge from the interior cavity 48 of the withdrawal manifold 34 .
- the scraper assemblies 36 include scraper arms 56 and scraper blades 58 (FIG. 1 ).
- the scraper arms 56 are spiral-shaped and are connected to the wall 40 of the withdrawal manifold 34 .
- the scraper arms 56 extend from the withdrawal manifold 34 adjacent to the withdrawal ports 50 toward the wall 22 of the tank 12 .
- Tops 60 of the scraper arms 56 located adjacent to the withdrawal manifold 34 are substantially aligned with the top portion 38 of the withdrawal manifold 34 , and the heights of the tops 60 of the scraper arms 56 with respect to the bottom 20 of the tank 12 increase as the scraper arms 56 extend radially outward away from the withdrawal manifold 34 .
- Scraper blades 58 are connected to the bottom of the scraper arms 56 and extend downwardly toward the bottom 20 of the tank 12 such that the scraper blades 58 contact the bottom 20 of the tank 12 .
- a drive cage 62 surrounds the center pier 14 and is coupled to the withdrawal manifold 34 and the scraper assemblies 36 .
- the scraper assemblies 36 are connected to the drive cage 62 by trusses 66 .
- the drive cage 62 is rotated about the central axis 24 by a motor 68 that is mounted to the bridge 16 .
- the drive cage 62 rotates the withdrawal manifold 34 and the scraper assembly 36 such that the scraper assemblies 36 move the sludge along the bottom 20 of the tank 12 toward the withdrawal manifold 34 .
- the sludge collector 18 includes entrapment plates 70 that are positioned above the withdrawal ports 50 and provide a physical barrier that traps transported sludge between the withdrawal manifold 34 and the scraper arms 56 and funnels the trapped sludge into the withdrawal ports 50 of the spiral sludge collector 18 .
- the entrapment plates 70 are connected to, and extend substantially horizontally between, the top portion 38 of the withdrawal manifold 34 and the tops 60 of the scraper arms 56 .
- the entrapment plates 70 are connected to the opposing sides 42 of the top portion 38 of the withdrawal manifold 34 and extend in opposite directions to connect with the tops 60 of the respective scraper arms 56 .
- the entrapment plates 70 include unfixed sides 72 which are substantially aligned with the adjacent sides 44 of the top portion 38 of the withdrawal manifold 34 .
- the entrapment plates 70 extend away from the withdrawal manifold 34 a distance that is approximately equal to the radius R of the withdrawal manifold 34 .
- the height of the entrapment plates 70 relative to the bottom 20 of the tank 12 increase as the entrapment plates 70 extend away from the withdrawal manifold 34 such that the entrapment plates 70 match the contour of the tops 60 of the scraper arms 56 .
- the circular clarifier 10 and the sludge collector 18 are continually operated to remove solids from the solution.
- the solution containing suspended solids is transferred from the influent line 28 up through the center pier 14 and into the tank 12 through the inlet ports 26 .
- the solution slowly flows through the diffuser 30 to the outer wall 22 of the tank 12 , at which time the solids separate and settle out of the solution onto the bottom 20 of the tank 12 .
- the solids accumulate on the bottom 20 of the tank 12 to form a sludge. Clarified liquid is removed from the tank 12 from outlets located near the wall 22 of the tank 12 adjacent to the surface of the solution.
- the drive motor 68 rotates the drive cage 62 , withdrawal manifold 34 , and the scraper assemblies 36 .
- Rotation of the scraper assemblies 36 moves the sludge along the bottom 20 of the tank 12 toward the withdrawal manifold 34 and under the entrapment plates 70 .
- the entrapment plates 70 trap the sludge between the withdrawal manifold 34 and the scraper assemblies 36 to prevent the sludge from passing over the tops 60 of the scraper arms 56 .
- the entrapment plates 70 also funnel the sludge through the withdrawal ports 50 into the interior cavity 48 of the withdrawal manifold 34 where the sludge withdrawal line 54 discharges the sludge from the interior cavity 48 of the withdrawal manifold 34 .
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
Claims (18)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/912,268 US6536606B2 (en) | 2001-07-24 | 2001-07-24 | Sludge collector with entrapment plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/912,268 US6536606B2 (en) | 2001-07-24 | 2001-07-24 | Sludge collector with entrapment plate |
Publications (2)
Publication Number | Publication Date |
---|---|
US20030019810A1 US20030019810A1 (en) | 2003-01-30 |
US6536606B2 true US6536606B2 (en) | 2003-03-25 |
Family
ID=25431618
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/912,268 Expired - Lifetime US6536606B2 (en) | 2001-07-24 | 2001-07-24 | Sludge collector with entrapment plate |
Country Status (1)
Country | Link |
---|---|
US (1) | US6536606B2 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020127387A1 (en) * | 2000-08-07 | 2002-09-12 | Richard Sale | Pre-metered, unsupported multilayer microporous membrane |
US20040124135A1 (en) * | 2000-08-07 | 2004-07-01 | Richard Sale | Unsupported multizone microporous membrane |
US20040154978A1 (en) * | 2000-08-07 | 2004-08-12 | Richard Sale | Pre-metered, unsupported multilayer microporous membrane |
US20060016685A1 (en) * | 2004-07-26 | 2006-01-26 | Pionetics, Inc. | Textured ion exchange membranes |
US20060124539A1 (en) * | 2004-12-10 | 2006-06-15 | Fujiwara Sangyo Kabushiki Kaisha | Sludge scraping and collecting apparatus |
KR100611407B1 (en) | 2005-04-01 | 2006-08-11 | 주식회사 타 셋 | Nonmetal chain round shape sludge collector |
US20060243677A1 (en) * | 2005-04-27 | 2006-11-02 | Sheahan Donald T | Manure separator |
US7780833B2 (en) | 2005-07-26 | 2010-08-24 | John Hawkins | Electrochemical ion exchange with textured membranes and cartridge |
US8562803B2 (en) | 2005-10-06 | 2013-10-22 | Pionetics Corporation | Electrochemical ion exchange treatment of fluids |
CN111450582A (en) * | 2020-04-15 | 2020-07-28 | 马文 | Sludge scraper for wastewater treatment |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100720622B1 (en) | 2006-05-11 | 2007-05-21 | 우준석 | Spiral scraper for sludge collecting |
CN106492600B (en) * | 2016-10-27 | 2020-12-22 | 山东保蓝环保工程有限公司 | Plasma purification trapper |
CN107583317B (en) * | 2017-10-05 | 2019-05-07 | 广西建工科净源生态环保产业投资有限公司 | A kind of sewage disposal system |
CN110292795A (en) * | 2019-04-12 | 2019-10-01 | 广州市欧伊若科技有限公司 | A kind of portable type sedimentation basin with charging function for sewage treatment |
CN111375231B (en) * | 2020-04-11 | 2022-05-17 | 淮北联诚网络科技有限公司 | Sludge scraping device of treatment tank for sewage treatment of environmental protection equipment |
KR20210148646A (en) * | 2020-06-01 | 2021-12-08 | 다음기술 주식회사 | The pillar rotating sludge discharge apparatus of the settling tank |
Citations (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1668063A (en) * | 1927-05-10 | 1928-05-01 | John W Force | Cleaning device for oil tanks and the like |
US1717764A (en) * | 1925-08-12 | 1929-06-18 | C H Gray | Sludge-collecting device |
US2003357A (en) | 1929-09-09 | 1935-06-04 | William A Gilchrist | Apparatus for clarification |
US2233619A (en) | 1939-01-10 | 1941-03-04 | Dorr Co Inc | Thickening apparatus |
US2525842A (en) | 1947-05-27 | 1950-10-17 | Dorr Co | Liquid clarifying apparatus |
US2624704A (en) | 1950-06-20 | 1953-01-06 | Dorr Co | Sewage treatment |
US2635757A (en) | 1950-03-16 | 1953-04-21 | Walker Process Equipment Inc | Water clarification apparatus and method |
US2678730A (en) | 1951-02-02 | 1954-05-18 | Dorr Co | Flocculation and sedimentation |
US2980934A (en) * | 1956-06-12 | 1961-04-25 | Chain Belt Co | Sediment eductors for settling chambers |
US3166502A (en) * | 1960-09-12 | 1965-01-19 | Eimco Corp | Sludge discharge means for sedimentation apparatus |
US3494462A (en) | 1967-07-28 | 1970-02-10 | Gen Epuration Et D Assainissem | Sludge settling apparatus |
US3717257A (en) | 1971-12-07 | 1973-02-20 | Rex Chainbelt Inc | Peripheral feed and effluent system for sedimentation tanks |
US3947355A (en) | 1973-09-06 | 1976-03-30 | Irwin David C | Apparatus and process of separating packing house waste |
US4592835A (en) | 1983-10-18 | 1986-06-03 | Rosenmund Ag | Pressure filter |
US5340485A (en) * | 1991-09-10 | 1994-08-23 | Baker Hughes Incorporated | Apparatus and method for clarifier sludge collection |
US5422006A (en) | 1992-07-09 | 1995-06-06 | Huber; Hans G. | Underwater clearing device for round sewage treatment basins |
US5435924A (en) | 1994-02-16 | 1995-07-25 | Albertson; Orris E. | Sludge collection apparatus and method |
US6068134A (en) | 1999-01-19 | 2000-05-30 | Enviroquip, Inc. | Clarifier with influent well scum removal |
-
2001
- 2001-07-24 US US09/912,268 patent/US6536606B2/en not_active Expired - Lifetime
Patent Citations (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1717764A (en) * | 1925-08-12 | 1929-06-18 | C H Gray | Sludge-collecting device |
US1668063A (en) * | 1927-05-10 | 1928-05-01 | John W Force | Cleaning device for oil tanks and the like |
US2003357A (en) | 1929-09-09 | 1935-06-04 | William A Gilchrist | Apparatus for clarification |
US2233619A (en) | 1939-01-10 | 1941-03-04 | Dorr Co Inc | Thickening apparatus |
US2525842A (en) | 1947-05-27 | 1950-10-17 | Dorr Co | Liquid clarifying apparatus |
US2635757A (en) | 1950-03-16 | 1953-04-21 | Walker Process Equipment Inc | Water clarification apparatus and method |
US2624704A (en) | 1950-06-20 | 1953-01-06 | Dorr Co | Sewage treatment |
US2678730A (en) | 1951-02-02 | 1954-05-18 | Dorr Co | Flocculation and sedimentation |
US2980934A (en) * | 1956-06-12 | 1961-04-25 | Chain Belt Co | Sediment eductors for settling chambers |
US3166502A (en) * | 1960-09-12 | 1965-01-19 | Eimco Corp | Sludge discharge means for sedimentation apparatus |
US3494462A (en) | 1967-07-28 | 1970-02-10 | Gen Epuration Et D Assainissem | Sludge settling apparatus |
US3717257A (en) | 1971-12-07 | 1973-02-20 | Rex Chainbelt Inc | Peripheral feed and effluent system for sedimentation tanks |
US3947355A (en) | 1973-09-06 | 1976-03-30 | Irwin David C | Apparatus and process of separating packing house waste |
US4592835A (en) | 1983-10-18 | 1986-06-03 | Rosenmund Ag | Pressure filter |
US5340485A (en) * | 1991-09-10 | 1994-08-23 | Baker Hughes Incorporated | Apparatus and method for clarifier sludge collection |
US5422006A (en) | 1992-07-09 | 1995-06-06 | Huber; Hans G. | Underwater clearing device for round sewage treatment basins |
US5435924A (en) | 1994-02-16 | 1995-07-25 | Albertson; Orris E. | Sludge collection apparatus and method |
US6068134A (en) | 1999-01-19 | 2000-05-30 | Enviroquip, Inc. | Clarifier with influent well scum removal |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060196830A1 (en) * | 2000-08-07 | 2006-09-07 | 3M Innovative Properties Company | Pre-metered, unsupported multilayer microporous membrane |
US6736971B2 (en) * | 2000-08-07 | 2004-05-18 | Cuno Incorporated | Pre-metered, unsupported multilayer microporous membrane |
US20040124135A1 (en) * | 2000-08-07 | 2004-07-01 | Richard Sale | Unsupported multizone microporous membrane |
US20040154978A1 (en) * | 2000-08-07 | 2004-08-12 | Richard Sale | Pre-metered, unsupported multilayer microporous membrane |
US20020127387A1 (en) * | 2000-08-07 | 2002-09-12 | Richard Sale | Pre-metered, unsupported multilayer microporous membrane |
US6994789B2 (en) | 2000-08-07 | 2006-02-07 | Cuno Incorporated | Pre-metered, unsupported multilayer microporous membrane |
US20060016685A1 (en) * | 2004-07-26 | 2006-01-26 | Pionetics, Inc. | Textured ion exchange membranes |
US7959780B2 (en) | 2004-07-26 | 2011-06-14 | Emporia Capital Funding Llc | Textured ion exchange membranes |
US20060124539A1 (en) * | 2004-12-10 | 2006-06-15 | Fujiwara Sangyo Kabushiki Kaisha | Sludge scraping and collecting apparatus |
US7234600B2 (en) | 2004-12-10 | 2007-06-26 | Fujiwara Sangyo Kabushiki Kaisha | Sludge scraping and collecting apparatus |
KR100611407B1 (en) | 2005-04-01 | 2006-08-11 | 주식회사 타 셋 | Nonmetal chain round shape sludge collector |
US20060243677A1 (en) * | 2005-04-27 | 2006-11-02 | Sheahan Donald T | Manure separator |
US7780833B2 (en) | 2005-07-26 | 2010-08-24 | John Hawkins | Electrochemical ion exchange with textured membranes and cartridge |
US8293085B2 (en) | 2005-07-26 | 2012-10-23 | Pionetics Corporation | Cartridge having textured membrane |
US8562803B2 (en) | 2005-10-06 | 2013-10-22 | Pionetics Corporation | Electrochemical ion exchange treatment of fluids |
US9090493B2 (en) | 2005-10-06 | 2015-07-28 | Pionetics Corporation | Electrochemical ion exchange treatment of fluids |
CN111450582A (en) * | 2020-04-15 | 2020-07-28 | 马文 | Sludge scraper for wastewater treatment |
CN111450582B (en) * | 2020-04-15 | 2021-11-16 | 葛洲坝水务(桓台)有限公司 | Sludge scraper for wastewater treatment |
Also Published As
Publication number | Publication date |
---|---|
US20030019810A1 (en) | 2003-01-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6536606B2 (en) | Sludge collector with entrapment plate | |
CA1174180A (en) | Coolant recovery system | |
JP3848372B2 (en) | Apparatus and method for discontinuously separating solid particles from a liquid | |
RU2403080C2 (en) | Gravity separator for water treatment | |
RU98103265A (en) | DEVICE AND METHOD FOR CONTINUOUS SEPARATION OF SOLID PARTICLES FROM LIQUID | |
JP2005013783A (en) | Liquid centrifugal separator | |
WO2002022274A1 (en) | Method and apparatus for liquid-liquid extraction | |
US4125467A (en) | Liquid-solids separator | |
WO1992017260A1 (en) | Material treatment apparatus | |
US6736275B2 (en) | Flocculating energy dissipating well arrangement (FEDWA) | |
US3722698A (en) | Circular clarifier mechanism | |
US7431852B2 (en) | Oil/grease separator with interchangeable inlet and outlet | |
US4144172A (en) | Industrial liquid cleansing apparatus | |
EP0069729A1 (en) | Industrial coolant fluid recovery system | |
CN106554102B (en) | Oil-water separation device and oil-water separation system | |
CN205676192U (en) | Eddy flow slagging-off collection device | |
JPH05212210A (en) | Oil-water separator | |
JPS6327832Y2 (en) | ||
JP2001070832A (en) | Centrifugal concentration device | |
JPH0371162B2 (en) | ||
JPH0688020B2 (en) | Pressure levitation separator | |
CN217613077U (en) | Coal chemical industry waste water phase separation equipment | |
KR102159823B1 (en) | Apparatus for Removing Scum of Circle Setting Pond | |
CA1040110A (en) | Drilling mud degasser apparatus and method | |
CN110917657B (en) | Centrifugal extractor suitable for easy-emulsification system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: UNITED STATES FILTER CORPORATION, CALIFORNIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SCHNEIDER, JEFFREY J.;FEDIE, ROBERT J.;REEL/FRAME:012195/0681;SIGNING DATES FROM 20010919 TO 20010920 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
AS | Assignment |
Owner name: USFILTER CORPORATION, PENNSYLVANIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:UNITED STATES FILTER CORPORATION;REEL/FRAME:015093/0586 Effective date: 20040731 |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
AS | Assignment |
Owner name: SIEMENS WATER TECHNOLOGIES HOLDING CORP., PENNSYLV Free format text: CHANGE OF NAME;ASSIGNOR:USFILTER CORPORATION;REEL/FRAME:019365/0288 Effective date: 20060901 |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
AS | Assignment |
Owner name: SIEMENS INDUSTRY, INC., GEORGIA Free format text: MERGER;ASSIGNOR:SIEMENS WATER TECHNOLOGIES HOLDING CORP.;REEL/FRAME:026138/0593 Effective date: 20110401 |
|
AS | Assignment |
Owner name: SIEMENS WATER TECHNOLOGIES LLC, GEORGIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SIEMENS INDUSTRY, INC.;REEL/FRAME:031896/0256 Effective date: 20130731 |
|
AS | Assignment |
Owner name: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLAT Free format text: INTELLECTUAL PROPERTY SECURITY AGREEMENT (SECOND LIEN);ASSIGNORS:WTG HOLDINGS III CORP.;WTG HOLDINGS II CORP.;SIEMENS TREATED WATER OUTSOURCING CORP.;AND OTHERS;REEL/FRAME:032126/0430 Effective date: 20140115 Owner name: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLAT Free format text: INTELLECTUAL PROPERTY SECURITY AGREEMENT (FIRST LIEN);ASSIGNORS:WTG HOLDINGS III CORP.;WTG HOLDINGS II CORP.;SIEMENS TREATED WATER OUTSOURCING CORP.;AND OTHERS;REEL/FRAME:032126/0487 Effective date: 20140115 |
|
AS | Assignment |
Owner name: EVOQUA WATER TECHNOLOGIES LLC, GEORGIA Free format text: CHANGE OF NAME;ASSIGNOR:SIEMENS WATER TECHNOLOGIES LLC;REEL/FRAME:032174/0282 Effective date: 20140116 |
|
FPAY | Fee payment |
Year of fee payment: 12 |
|
AS | Assignment |
Owner name: SIEMENS WATER TECHNOLOGIES LLC, GEORGIA Free format text: RELEASE OF SECURITY INTEREST (REEL/FRAME 032126/0487);ASSIGNOR:CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT;REEL/FRAME:055845/0245 Effective date: 20210401 Owner name: SIEMENS WATER TECHNOLOGIES LLC, GEORGIA Free format text: RELEASE OF SECURITY INTEREST (REEL/FRAME 032126/0430);ASSIGNOR:CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT;REEL/FRAME:055845/0311 Effective date: 20210401 |
|
AS | Assignment |
Owner name: JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT, NEW YORK Free format text: SECURITY INTEREST;ASSIGNORS:EVOQUA WATER TECHNOLOGIES LLC;NEPTUNE BENSON, INC.;REEL/FRAME:055848/0689 Effective date: 20210401 |
|
AS | Assignment |
Owner name: NEPTUNE BENSON, INC., RHODE ISLAND Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:JPMORGAN CHASE BANK N.A., AS COLLATERAL AGENT;REEL/FRAME:063787/0943 Effective date: 20230524 Owner name: EVOQUA WATER TECHNOLOGIES LLC, PENNSYLVANIA Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:JPMORGAN CHASE BANK N.A., AS COLLATERAL AGENT;REEL/FRAME:063787/0943 Effective date: 20230524 |